Subaru Legacy IV (2008 year). Manual — part 857

TPM(diag)-14

Subaru Select Monitor

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)

2. WITHOUT DTC

DETECTING CONDITION:
• Defective combination meter
• Defective harness
TROUBLE SYMPTOM:
• Tire pressure warning light does not go off.
• “No diagnostic Code Present” will be displayed on the Subaru Select Monitor.

NOTE:
When the tire pressure warning light is OFF and “No diagnostic Code Present” will be displayed on the Sub-
aru Select Monitor, the system is in a normal condition.
WIRING DIAGRAM:

FB-36

F/B FUSE NO.5

(IG)

2

6

A:

i10

B:

i11

A3

B6

FB-17

F/B FUSE NO. 7

(B)

i102

R167

R211

FB-48

F/B FUSE NO. 4

(IG)

16

5

9

1 2 3

4 5 6

7 8 9 10 11 12 13 14

B:

i11

i102

1 2 3
8 9 10

4

11 12 13 14 15 16

5 6 7

A:

i10

1 2 3 4 5

6 7 8 9 10

11 12

19 20 21

13 14 15 16

17 18

22

R211

1 2 3 4 5 6
7 8 9 10 11 12

TPM00042

TO POWER SUPPLY CIRCUIT

COMBINATION

METER

TIRE INFLATION
PRESSURE
WARNING LIGHT

DRIVE CIRCUIT

MICRO COMPUTER

TPM CONTROL MODULE

TPM(diag)-15

Subaru Select Monitor

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)

Step

Check

Yes

No

1

CHECK SUBARU SELECT MONITOR DATA.
1) Select {Current Data Display & Save} in
Subaru Select Monitor.
2) Read the data of the “Tire pressure warning
light”.

Is “ON” indicated?

Replace the tire
pressure monitor-
ing control module.
<Ref. to WT-11,
TIRE PRESSURE
MONITORING
CONTROL MOD-
ULE, REMOVAL,
Tire Pressure
Monitoring Sys-
tem.>

Go to step 2.

2

CHECK WIRING HARNESS.
Measure the resistance between tire pressure
monitoring control module and combination
meter connector.

Connector & terminal

(i11) No. 6 — (R211) No. 2:

Is the resistance less than 0.5

:? Go to step 3.

Repair the harness
and connector
between tire pres-
sure monitoring
control module and
combination meter.

3

CHECK POOR CONTACT OF CONNECTOR. Is there poor contact in the tire

pressure monitoring control
module connector and combi-
nation meter connector?

Repair the connec-
tor.

Check the combi-
nation meter.

TPM(diag)-16

Read Diagnostic Trouble Code (DTC)

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)

6. Read Diagnostic Trouble

Code (DTC)

A: OPERATION

For details concerning DTC reading procedure, re-
fer to “Subaru Select Monitor”. <Ref. to TPM(diag)-
8, Subaru Select Monitor.>

TPM(diag)-17

Inspection Mode

TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)

7. Inspection Mode

A: PROCEDURE

Reproduce the malfunction occurrence condition
as much as possible. Drive the vehicle at 40 km/h
(25 MPH) or faster for at least ten minutes.